CN102683902B - The dual-polarized radio-frequency (RF) base station antenna of a kind of Meta Materials - Google Patents
The dual-polarized radio-frequency (RF) base station antenna of a kind of Meta Materials Download PDFInfo
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- CN102683902B CN102683902B CN201110062175.1A CN201110062175A CN102683902B CN 102683902 B CN102683902 B CN 102683902B CN 201110062175 A CN201110062175 A CN 201110062175A CN 102683902 B CN102683902 B CN 102683902B
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Abstract
The present invention relates to the dual-polarized radio-frequency (RF) base station antenna of a kind of Meta Materials, by the first feeder line, the second feeder line, between the first feeder line and metal micro structure, between the second feeder line and metal micro structure, these five positions of metal micro structure at least one on the space that electronic component embeds is set, can be finely tuned by the performance of performance to antenna changing the electronic component embedded, design the antenna of the requirement meeting adaptability and versatility.
Description
Technical field
The present invention relates to a kind of dual polarization radio frequency antenna, more particularly, relate to the dual-polarized radio-frequency (RF) base station antenna of a kind of Meta Materials.
Background technology
Dual polarized antenna is a kind of new antenna technology, traditional dual polarized antenna is by being combined with+45 ° and the mutually orthogonal antenna of-45 ° of two secondary polarised direction and under being operated in transmission duplex pattern, therefore its most outstanding advantage saves the antenna amount of single directional base station simultaneously; The directional base station (three sectors) of general GSM digital mobile communication network will use 9 antennas, each fan-shaped use 3 antennas (space diversity, one two receipts), if use dual polarized antenna, each fan-shaped needs 1 antenna; Simultaneously due in dual polarized antenna, the polarization orthogonal of ± 45 ° can ensure that the isolation between+45 ° and-45 ° of two slave antenna meets the requirement (>=30dB) of intermodulation to isolation between antennas, and the space interval therefore between dual polarized antenna only needs 20-30cm; In addition, dual polarized antenna has the advantage of electrical tilt antenna, uses dual polarized antenna the same with electrical tilt antenna in mobile radio communication, can reduce call loss, reduces interference, improves the service quality of the whole network.If use dual polarized antenna, because dual polarized antenna is not high to erection installation requirement, expropriation of land is not needed to build tower, only need the iron prop of a frame diameter 20cm, dual polarized antenna is fixed on iron prop by corresponding coverage direction, thus saving capital expenditure, make station layout more reasonable, the selected of base station site is more prone to simultaneously.
There is larger otherness in the environment that antenna works in different products and electromagnetic property, will cause antenna performance in design and use, there is larger difference, so require that the antenna designed must have stronger adaptability and versatility.In sum, original technology in use will run into the problem of versatility and the poor performance opposite sex.
Summary of the invention
The technical problem to be solved in the present invention is, larger otherness is there is for antenna operational environment and electromagnetic property in different product, cause antenna performance in design and use, there is larger difference, there is provided a kind of Meta Materials dual-polarized radio-frequency (RF) base station antenna, this antenna has stronger adaptability and versatility.
The technical solution adopted for the present invention to solve the technical problems is: the dual-polarized radio-frequency (RF) base station antenna of a kind of Meta Materials, comprise the first feeder line, the second feeder line, sheet metal and can short circuit point, described sheet metal has engraved metal micro structure, and described dual polarization radio frequency antenna is preset with the space that electronic component embeds.
Further, described spatial placement the first feeder line, the second feeder line, between the first feeder line and metal micro structure, between the second feeder line and metal micro structure, these five positions of metal micro structure at least one on.
Further, described spatial placement is on the cabling of metal micro structure, and described electronic component is embedded on the cabling of metal micro structure.
Further, described spatial placement is in the cabling interval of metal micro structure, and described electronic component is embedded in the cabling interval of metal micro structure.
Further, described electronic component is perceptual electronic component, capacitive electrical element or resistance.
Further, the scope of described perceptual electronic component inductance value is between 0-5uH.
Further, the scope of described capacitive electrical component capacitance value is between 0-2pF.
Further, described space is the pad be formed on radio-frequency antenna.
Further, described first feeder line and the second feeder line adopt different polarization mode of operations.
Further, described first feeder line obtains horizontal polarization mode of operation relative to the difference of metal micro structure feed placement, and described second feeder line obtains perpendicular polarization mode of operation relative to the difference of metal micro structure feed placement.
Implement adjustable dual polarization radio frequency antenna of the present invention, relative to existing antenna, there is following beneficial effect: by the first feeder line, the second feeder line, between the first feeder line and metal micro structure, between the second feeder line and metal micro structure, these five positions of metal micro structure at least one on the space that electronic component embeds is set, can be finely tuned by the performance of performance to antenna changing the electronic component embedded, design the antenna of the requirement meeting adaptability and versatility.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of radiofrequency antenna made of metamaterial in prior art;
Fig. 2 is by changing the antenna of the different polarization modes that the position of feeder line obtains based on Fig. 1;
Fig. 3 is adjustable dual polarization radio frequency antenna reserved schematic diagram embedding the space of electronic component on feeder line in the present invention;
Fig. 4 is adjustable dual polarization radio frequency antenna reserved schematic diagram embedding the space of electronic component between feeder line and metal micro structure;
Fig. 5 is the schematic diagram in the space of reserved embedding electronic component on the cabling of metal micro structure in adjustable dual polarization radio frequency antenna;
Fig. 6 is the schematic diagram in the space of reserved embedding electronic component in the cabling interval of metal micro structure in adjustable dual polarization radio frequency antenna;
Fig. 7 is at the first feeder line, the second feeder line, between the first feeder line and metal micro structure, between the second feeder line and metal micro structure, these five positions of metal micro structure all reserve the schematic diagram in the space embedding electronic component in adjustable dual polarization radio frequency antenna.
Embodiment
Fig. 1 is existing radiofrequency antenna made of metamaterial structural representation, comprise feeder line 1, sheet metal 2 and can short circuit point 3, feeder line 1 and sheet metal 2 are by being connected by short circuit point 3, sheet metal 2 has been engraved metal micro structure 10, described metal micro structure can be complementary opening resonance loop structure, complementary helix structure, opening helical ring structure, two opening helical ring structure, a kind of in complementary folding line structure and derived by several structure above, metal micro structure that compound, combination or group battle array obtain.Several micro-structurals above can referenced patent number be specifically the Chinese patent application of CN201490337.
Fig. 2 is the antenna being obtained different polarization mode based on Fig. 1 by the position changing feeder line, and the Research of Antenna Polarization that the feeding classification that Fig. 2 (a) introduces obtains is perpendicular polarization; The Research of Antenna Polarization that the feeding classification that Fig. 2 (b) introduces obtains is horizontal polarization; Above-mentioned two kinds of forms are single-polarized antenna form.The Research of Antenna Polarization that the feeder line mode that Fig. 2 (c) introduces obtains is the dual polarization form of horizontal polarization and perpendicular polarization, the polarization mode of operation difference that each feeding classification is corresponding, a kind of polarization mode is applied to receiver, and another kind of polarization mode is applied to reflector.
As shown in Figures 3 to 6, adjustable dual polarization radio frequency antenna in the present invention comprises the first feeder line 11, second feeder line 12, sheet metal 4, sheet metal 4 is engraved metal micro structure 100, described adjustable radio-frequency antenna is at the first feeder line 11, second feeder line 12, between first feeder line 11 and metal micro structure 100, between second feeder line 12 and metal micro structure 100, at least one of these five positions of metal micro structure 100 is preset with the space embedding electronic component, for regulating the operating frequency of antenna, need the kind of the electronic component embedded according to concrete needs at the different electronic component of corresponding spatial embedding, the form of pad is taked in reserved space.In the unemployed situation in space, can by wire by space electric connection.Such as, space is when the form adopting pad, and when pad is not welded with electronic component, available wire is communicated with, and ensures that it is electrically connected.Described first feeder line 11 of the present invention and the second feeder line 12 adopt different polarization mode of operations, to realize dual polarization.Described first feeder line obtains horizontal polarization mode of operation relative to the difference of metal micro structure feed placement, and described second feeder line obtains perpendicular polarization mode of operation relative to the difference of metal micro structure feed placement.
Above-mentioned electronic component is generally perceptual electronic component, capacitive electrical element or resistance, can certainly be its combination.
Five embodiments are divided to introduce the present invention in detail below.
Embodiment one
As shown in Figure 3, in the present embodiment, first feeder line 11 and the second feeder line 12 are preset with the space 31 of the perceptual electronic component of embedding and/or resistance, space 32 respectively, the position in embedding electronic component space of presetting can be the optional position on the first feeder line 11 and the second feeder line 12, and can have multiple.Perceptual electronic component can be embedded, to change the inductance value on the first feeder line 11 and the second feeder line 12 in space 31 and space 32.Using formula: f=1/ (2p √ LC), square being inversely proportional to, so when the operating frequency needed be lower operating frequency, by suitable embedding inductance or the realization of perceptual electronic component of the size of known inductance value and operating frequency.In the present embodiment, the inductance value range of the perceptual electronic component added is between 0-5uH, if too large alternating signal will be consumed by inductive element thus have influence on the radiation efficiency of antenna.This kind of radio-frequency antenna has the good radiation characteristic of multiple frequency range, five main radiation frequencies are distributed to 5.5GHz from 900MHz always, almost cover GSM, CDMA, bluetooth, WLan (IEEE802.11 agreement), each main communication frequency such as GPS, TD-LTE, there is very high integrated level and change the object of operating frequency of antenna by regulating the inductance value on feeder line to reach.Certainly, also two resistance can be embedded, to improve the radiation resistance of antenna in space 31 with space 32.Certain space 31 and space 32 also can be embed a resistance and a perceptual electronic component respectively, namely achieve the adjustment of operating frequency, can improve again the radiation resistance of antenna.Also only electronic component can be added wherein, another space wire short circuit in certain space 31 and space 32.
Embodiment two
As shown in Figure 4, in the present embodiment, be preset with between the first feeder line 11 and metal micro structure 100, between the second feeder line 12 and metal micro structure 100 embed capacitive electrical element space 41, space 42, the position in embedding electronic component space of presetting can be the optional position between the first feeder line 11 and metal micro structure 100, between the second feeder line 12 and metal micro structure 100.In Fig. 4, space 41 and space 42 are the space embedding capacitive electrical element in the present embodiment, between first feeder line 11, second feeder line 12 and sheet metal 4, itself there is certain electric capacity, here by embedding the signal coupling between capacitive electrical element regulation first feeder line 11, second feeder line 12 and sheet metal 4, using formula: f=1/ (2p √ LC), square being inversely proportional to of the size of known capacitance and operating frequency, so when the operating frequency needed is lower operating frequency, realized by suitable embedded capacitor or perceptual electronic component.In the present embodiment, the capacitance value range of the capacitive electrical element added is usually between 0-2pF, but the capacitance embedded along with the change of operating frequency of antenna also may exceed the scope of 0-2pF.Multiple space can certainly be preset between the first feeder line 11, second feeder line 12 and metal micro structure 100.
Embodiment three
As shown in Figure 5, in the present embodiment, the cabling of metal micro structure 100 is reserved with the space embedding perceptual electronic component and/or resistance, and the space embedding electronic component is not only confined to the space 51 that provides in figure and space 52, as long as other positions satisfy condition.The object embedding perceptual electronic component is herein the inductance value increasing metal micro structure internal resonant structure, thus plays the effect of adjustment to the resonance frequency of antenna and bandwidth of operation; Identical with embodiment one, the object of embedded resistor improves the radiation resistance of antenna herein.So to embedding perceptual electronic component or resistance, then determine as required.In addition in the space not embedding electronic component, adopt wire short circuit.
Embodiment four
As shown in Figure 6, in the present embodiment, be reserved with the space embedding capacitive electrical element in the cabling interval of metal micro structure, the space embedding electronic component is not only limited to and the space 61 that provides in Fig. 6, as long as other positions satisfy condition.The capacitive electrical element embedded can change the resonance performance of metal micro structure, finally improves Q value and the resonant operational point of antenna.As common practise, we know, the pass of passband BW and resonance frequency w0 and quality factor q is: BW=wo/Q, shows, Q greatly then passband is narrow, the little then pass band of Q.Q=wL/R=1/wRC is wherein: Q is quality factor; Supply frequency when w is circuit resonance; L is inductance; R is the resistance of string; C is electric capacity, and from Q=wL/R=1/wRC formula, Q and C is inverse ratio, therefore, can reduce Q value, passband is broadened by adding capacitive electrical element.
Embodiment five
As shown in Figure 7, in the present embodiment, the space that adjustable dual polarization joint radio-frequency antenna is all arranging electronic component and embeds between the first feeder line 11, second feeder line 12, first feeder line 11 and metal micro structure 100, between the second feeder line 12 and metal micro structure 100, on these five positions of metal micro structure 100, certainly the position provided in an embodiment is not uniqueness, and embodiment is consistent with the principle of embodiment one to four.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (5)
1. the dual-polarized radio-frequency (RF) base station antenna of Meta Materials, it is characterized in that, the dual-polarized radio-frequency (RF) base station antenna of described Meta Materials comprises the first feeder line, second feeder line, sheet metal, described sheet metal has engraved metal micro structure, described dual polarization radio frequency antenna is preset with the space that electronic component embeds, described spatial placement is at the first feeder line, second feeder line, between first feeder line and metal micro structure, between second feeder line and metal micro structure, in at least one of these five positions of metal micro structure, or described spatial placement is on the cabling of metal micro structure and described electronic component is embedded on the cabling of metal micro structure, or described spatial placement is in the interval between the cabling and cabling of metal micro structure and described electronic component is embedded in the interval between the cabling of metal micro structure and cabling,
Described first feeder line and the second feeder line adopt different polarization mode of operations to realize dual polarization.
2. the dual-polarized radio-frequency (RF) base station antenna of Meta Materials according to claim 1, is characterized in that, described electronic component is perceptual electronic component, capacitive electrical element or resistance.
3. the dual-polarized radio-frequency (RF) base station antenna of Meta Materials according to claim 2, is characterized in that, described space is the pad be formed on radio-frequency antenna.
4. the dual-polarized radio-frequency (RF) base station antenna of Meta Materials according to claim 2, is characterized in that, the scope of described perceptual electronic component inductance value is between 0-5uH.
5. the dual-polarized radio-frequency (RF) base station antenna of Meta Materials according to claim 2, is characterized in that, the scope of described capacitive electrical component capacitance value is between 0-2pF.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110062175.1A CN102683902B (en) | 2011-03-14 | 2011-03-14 | The dual-polarized radio-frequency (RF) base station antenna of a kind of Meta Materials |
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| CN201110062175.1A CN102683902B (en) | 2011-03-14 | 2011-03-14 | The dual-polarized radio-frequency (RF) base station antenna of a kind of Meta Materials |
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| CN102683902A CN102683902A (en) | 2012-09-19 |
| CN102683902B true CN102683902B (en) | 2015-07-29 |
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| CN103888953B (en) * | 2012-12-19 | 2020-01-07 | 深圳光启智能光子技术有限公司 | Wireless coverage system |
| CN107834191B (en) * | 2017-12-19 | 2020-01-17 | 河南师范大学 | Single spiral slot antenna of coplanar waveguide feed |
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| US7015865B2 (en) * | 2004-03-10 | 2006-03-21 | Lucent Technologies Inc. | Media with controllable refractive properties |
| US7068224B2 (en) * | 2004-03-12 | 2006-06-27 | Alien Technology Corporation | Switching patch antenna |
| CN103022704B (en) * | 2005-01-27 | 2015-09-02 | 株式会社村田制作所 | Antenna and Wireless Telecom Equipment |
| CN101740862B (en) * | 2008-11-20 | 2014-04-30 | 深圳光启创新技术有限公司 | Dipole antenna of RF chip |
| CN101667680A (en) * | 2009-08-31 | 2010-03-10 | 深圳市启汉科技有限公司 | Monopole radio frequency antenna |
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